https://doi.org/10.1140/epjc/s10052-015-3746-5
Regular Article - Experimental Physics
A precise characterisation of the top quark electro-weak vertices at the ILC
1
Laboratoire de l’Accélérateur Linéaire (LAL), Centre Scientifique d’Orsay, BP 34, Bâtiment 200, 91898, Orsay Cedex, France
2
IFIC, Universitat de Valencia CSIC, c/Catedrático José Beltrán, 2, 46980, Paterna, Spain
3
COMSATS Institute of Information Technology, Islamabad, Pakistan
4
CERN, 1211, Geneva 23, Switzerland
5
IUT d’Orsay, Université Paris-Sud, Orsay Cedex, France
6
Technische Universität München, 85748, Garching, Germany
* e-mail: poeschl@lal.in2p3.fr
Received:
25
May
2015
Accepted:
19
October
2015
Published online:
29
October
2015
Top quark production in the process 
at a future linear electron positron collider with polarised beams is a powerful tool to determine indirectly the scale of new physics. The presented study, based on a detailed simulation of the ILD detector concept, assumes a centre-of-mass energy of 
GeV and a luminosity of 
equally shared between the incoming beam polarisations of 
. Events are selected in which the top pair decays semi-leptonically and the cross sections and the forward–backward asymmetries are determined. Based on these results, the vector, axial vector and tensorial CP conserving couplings are extracted separately for the photon and the 
component. With the expected precision, a large number of models in which the top quark acts as a messenger to new physics can be distinguished with many standard deviations. This will dramatically improve expectations from e.g. the LHC for electro-weak couplings of the top quark.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
